You die, but you come to another world. Several waves of beasts called alien monsters broke out here, destroying most of the human settlements. The federal government, in essence, has long ceased to exist in name only. Human beings have established numerous protected areas in various corners of the world to fight against the invasion of alien beasts. At the same time as the alien beasts broke out, humans also produced relatively powerful forces, but this force was extremely uncontrollable and would gradually cause people's spirits to collapse. For some financial and other reasons, you accepted the job of cleaning up the alien beasts in District 3. Even if it makes the life you wish for a mess...
Intention: Face the past and embrace the future